CN219246786U

CN219246786U - Air-cooled battery system

Info

Publication number: CN219246786U
Application number: CN202320151320.1U
Authority: CN
Inventors: 梁春欣; 陈鑫; 郁辰; 曹辉
Original assignee: Shanghai Ruipu Energy Co Ltd; Rept Battero Energy Co Ltd
Current assignee: Shanghai Ruipu Energy Co Ltd; Rept Battero Energy Co Ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-06-23
Anticipated expiration: 2033-02-08

Abstract

The utility model belongs to the technical field of batteries, and particularly discloses an air-cooled battery system, which comprises a shell, battery modules and a heat radiation assembly, wherein an air inlet hole is formed in the shell, each battery module comprises a plurality of electric cores which are arranged at intervals, a first air channel is arranged between two adjacent electric cores, a second air channel is formed between one end of each battery module along the arrangement direction of the electric cores and the shell, the first air channel and the second air channel are communicated with the air inlet hole, a third air channel is formed in the heat radiation assembly, one end of the third air channel is communicated with the first air channel and the second air channel, and the other end of the third air channel is communicated with the external environment, so that two heat radiation paths are formed in the shell of the air-cooled battery system. One heat dissipation path takes away most of heat of the battery cells through a large-surface heat dissipation mode, the overall temperature of the battery module is reduced, and the other heat dissipation path forms internal circulation air inlet in the shell, so that air flow in the shell is increased, the temperature difference between the battery cells is reduced, and the service life of the battery cells is prolonged.

Description

Air-cooled battery system

Technical Field

The utility model relates to the technical field of batteries, in particular to an air-cooled battery system.

Background

With the development of new energy automobiles, because of energy conservation and small environmental pollution, there is a trend of replacing traditional fuel vehicles gradually, a series of hybrid electric vehicles appear in the development process, and currently common hybrid electric batteries comprise an air-cooled battery system which can generate a large amount of heat in the charging/discharging process.

In the prior art, the air-cooled battery system generally adopts two modes of module integral heat dissipation or large-surface heat dissipation of a battery cell, and compared with the technical scheme without air cooling, the module integral heat dissipation mode has the advantages of smaller heat dissipation area, limited heat dissipation capacity and poor heat dissipation effect for larger battery modules; the heat dissipation capacity of the large-surface heat dissipation of the battery cell is improved to a certain extent compared with the whole heat dissipation mode of the module, but due to the problems of space and contact resistance, the temperature at the front end and the rear end of the module is higher, the temperature difference between the battery cell and the battery cell is large, and a better heat dissipation effect cannot be achieved.

Therefore, there is a need for an air-cooled battery system that solves the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide an air-cooled battery system which is simple in structure, good in heat dissipation effect, small in temperature difference between battery cells and capable of prolonging the service life of the battery cells.

To achieve the purpose, the utility model adopts the following technical scheme:

in one aspect, the present utility model provides an air-cooled battery system, comprising:

the shell is provided with an air inlet;

the battery module comprises at least two battery modules, wherein the at least two battery modules are arranged in the shell, each battery module comprises a plurality of electric cores which are arranged at intervals, a first air channel is arranged between every two adjacent electric cores, the first air channel is communicated with the air inlet, a second air channel is formed between one end of each battery module along the arrangement direction of the electric cores and the shell, and the second air channel is communicated with the air inlet;

the heat dissipation assembly is arranged between two adjacent battery modules, a third air channel is formed in the heat dissipation assembly, one end of the third air channel is communicated with the first air channel and the second air channel, and the other end of the third air channel is communicated with the external environment.

Optionally, the shell includes the upper cover and the lower box assembly of mutual lock, be equipped with two at least installation positions on the lower box assembly, the battery module with the installation position one-to-one, just the battery module sets up in the installation position.

Optionally, the heat dissipation assembly comprises a heat dissipation air channel, a third air channel is formed inside the heat dissipation air channel, and first air inlets are formed in two opposite sides of the heat dissipation air channel and communicate the first air channel with the third air channel;

the tail end of the heat dissipation air duct is provided with a second air inlet, the second air inlet is used for communicating the second air duct with the third air duct, the head end of the heat dissipation air duct is provided with an air outlet, and the air outlet is used for communicating the third air duct with the external environment.

Optionally, the heat dissipation assembly further includes a fan, the fan is disposed at the air outlet, and the fan is used for generating a passive airflow to discharge the hot air into the external environment.

Optionally, the heat dissipation wind channel includes major structure and guide part, first air intake with the second air intake set up in on the major structure, guide part sets up to loudspeaker form, the osculum end of guide part with major structure connects, the big mouth end of guide part forms the air outlet.

Optionally, the main body structure includes interconnect's roof, bottom plate, two relative curb plates and end plate, first air intake digs to establish on the curb plate, the second air intake sets up on the end plate.

Optionally, the second air inlet is a plurality of through holes formed in the end plate, the through holes are arranged on the end plate at intervals, and the through holes are communicated with the second air duct and the third air duct.

Optionally, the second air inlet is a groove formed in the end plate, and the groove is communicated with the second air channel and the third air channel.

Optionally, a partition plate is arranged between two adjacent battery cells, a plurality of first air channels are arranged in the partition plate, and the first air channels are parallel to each other.

Optionally, a U-shaped bracket is disposed in the housing, and the heat dissipation component is fixed on the U-shaped bracket.

The beneficial effects of the utility model are as follows:

the utility model provides an air-cooled battery system which comprises a shell, at least two battery modules and a heat dissipation assembly, wherein the battery modules and the heat dissipation assembly are arranged in the shell, and the heat dissipation assembly is clamped between two adjacent battery modules. Be equipped with the fresh air inlet on the shell, every battery module all includes the electric core that a plurality of interval arrangement set up, be equipped with first wind channel between two adjacent electric cores, form the second wind channel between battery module and the shell along electric core arrangement direction's one end, first wind channel, second wind channel and fresh air inlet intercommunication, form the third wind channel in the radiating component, the one end and the first wind channel and the second wind channel intercommunication of third wind channel, the other end and the external environment intercommunication of third wind channel, thereby two heat dissipation paths have been formed in air-cooled battery system's shell. Therefore, the first heat dissipation path takes away most heat of the battery cells through a large-surface heat dissipation mode, the overall temperature of the battery module is reduced, the second heat dissipation path forms internal circulation air inlet in the shell, the air flow in the shell is increased, the problem that the heat cannot be taken away due to the influence of space and position of the battery cells at the edge is avoided, the temperature difference between the battery cells is reduced, and the service life of the battery cells is prolonged.

Drawings

Fig. 1 is an exploded view of an air-cooled battery system provided in a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of an assembled air-cooled battery system according to a first embodiment of the present utility model;

fig. 3 is a cross-sectional view of an air-cooled battery system provided in a first embodiment of the utility model;

fig. 4 is a schematic view illustrating a structure of a battery module according to a first embodiment of the present utility model;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

fig. 6 is a schematic structural diagram of a heat dissipation duct according to a first embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a heat dissipation duct according to a first embodiment of the present utility model at another view angle;

fig. 8 is a schematic structural diagram of a heat dissipation duct provided in a second embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a heat dissipation duct according to a second embodiment of the present utility model under another view angle.

In the figure:

100. a housing; 110. an upper cover; 111. an air inlet hole; 120. a lower box assembly; 121. convex ribs; 122. a U-shaped bracket; 200. a battery module; 210. a battery cell; 220. a partition plate; 221. a first air duct; 300. a heat dissipation air duct; 310. a top plate; 320. a bottom plate; 330. a side plate; 340. an end plate; 341. a through hole; 342. a profile groove; 350. a guide part; 400. a blower.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

As shown in fig. 1-3, the present embodiment provides an air-cooled battery system, which includes a housing 100, at least two battery modules 200, and a heat dissipation assembly, wherein the at least two battery modules 200 and the heat dissipation assembly are both disposed in the housing 100, and the heat dissipation assembly is sandwiched between two adjacent battery modules 200. The battery module 200 comprises a plurality of battery cells 210 which are arranged at intervals, a first air channel 221 is arranged between two adjacent battery cells 210, the first air channel 221 is communicated with the air inlet holes 111, a second air channel is formed between one end of the battery module 200 along the arrangement direction of the battery cells 210 and the housing 100, the second air channel is communicated with the air inlet holes 111, a third air channel is formed in the heat dissipation assembly, one end of the third air channel is communicated with the first air channel 221 and the second air channel, the other end of the third air channel is communicated with the external environment, and therefore two heat dissipation paths are formed in the housing 100 of the air-cooled battery system, wherein the first heat dissipation paths comprise the air inlet holes 111, the first air channel 221 and the third air channel, and the second heat dissipation paths comprise the air inlet holes 111, the second air channel and the third air channel. The air inlet hole 111 is used as an air inlet source of cold air, after the cold air enters the shell 100 from the air inlet hole 111, a part of cold air is split and then enters the first air channel 221 between the electric core 210 and the electric core 210 respectively, heat exchange is carried out between the cold air and the large surface of the electric core 210 to take away heat of the cold air, and then hot air subjected to heat exchange with the electric core 210 enters the third air channel and flows into the external environment from the third air channel; after entering the casing 100 from the air inlet 111, the other part of cold air flows into the second air channel between the electric core 210 and the casing 100, exchanges heat with the large surface of the electric core 210 positioned at the edge to take away heat, then merges with the hot air entering the third air channel, and flows into the external environment from the third air channel.

Therefore, the air-cooled battery system changes the mode of air flow in the air-cooled battery system on the basis of adopting a large-surface heat dissipation mode, and through the arrangement of the second heat dissipation path, internal circulation air inlet is formed in the shell 100, so that the air flow in the shell 100 is increased, the problem that heat cannot be taken away due to the influence of space and position of the battery cell 210 at the edge is avoided, the overall temperature of the battery module 200 is reduced, meanwhile, the temperature difference between the battery cells 210 is reduced, and the service life of the battery cell 210 is prolonged.

As an alternative, the housing 100 in this embodiment includes an upper cover 110 and a lower case assembly 120 that are fastened to each other, two battery modules 200 and a set of heat dissipation components are disposed in the housing 100, two mounting positions are disposed on the lower case assembly 120, the battery modules 200 are in one-to-one correspondence with the mounting positions, each battery module 200 is disposed in one mounting position, the heat dissipation components are disposed between the two battery modules 200, and the heat dissipation components are fixed on the lower case assembly 120. Illustratively, the inner side wall of the lower case assembly 120 is provided with a rib 121, the lower case assembly 120 is divided into two mounting positions by the rib 121, the rib 121 is provided with a U-shaped bracket 122, and the heat dissipation component is fixed on the U-shaped bracket 122. Preferably, the U-shaped brackets 122 are provided in two, thereby improving the stability of the heat dissipation assembly fixation.

Referring to fig. 4 and 5, a partition 220 is disposed between two adjacent electric cores 210 in the present embodiment, and the partition 220 can play a certain supporting role on the electric cores 210, so that a certain gap is formed between the two adjacent electric cores 210, further, a plurality of first air channels 221 extending along the horizontal direction are formed in the partition 220, and the plurality of first air channels 221 are parallel to each other, so that cold air can enter the third air channel through the first air channels 221.

Referring to fig. 6 and 7, the heat dissipation assembly in this embodiment includes a heat dissipation air duct 300, a third air duct is formed inside the heat dissipation air duct 300, first air inlets are respectively provided at opposite sides of the heat dissipation air duct 300, the first air inlets communicate the first air duct 221 with the third air duct, a second air inlet is provided at a tail end of the heat dissipation air duct 300, the second air inlet communicates the second air duct with the third air duct, an air outlet is provided at a head end of the heat dissipation air duct 300, and the air outlet communicates the third air duct with the external environment. Further, the heat dissipation assembly further comprises a fan 400, the fan 400 is arranged at the air outlet, passive air flow can be formed in the shell 100 through the fan 400, so that cold air can dissipate heat along two heat dissipation paths, the flow speed of air in the shell 100 is improved, heat dissipation is accelerated, meanwhile, poor heat dissipation effect of the battery cell 210 located at the edge due to space and position influence is avoided, rapid heat dissipation of the battery module 200 is facilitated, and heat dissipation is uniform.

Further, the heat dissipation air duct 300 in this embodiment includes a main structure and a guiding portion 350, the first air inlet and the second air inlet are disposed on the main structure, the guiding portion 350 is configured to be horn-shaped, a small opening end of the guiding portion 350 is connected with the main structure, a large opening end of the guiding portion 350 forms an air outlet, the fan 400 is disposed at the large opening end of the guiding portion 350, on one hand, the guiding portion 350 has a certain guiding effect on the hot air flow, on the other hand, the guiding portion 350 can reduce the flowing speed of the hot air flow at the air outlet, and reduce noise.

The main structure includes a top plate 310, a bottom plate 320, two opposite side plates 330 and an end plate 340, wherein the end plate 340 is connected with the top plate 310, the bottom plate 320 and the two opposite side plates 330, the end plate 340 is disposed at the tail end of the heat dissipation air duct 300, the two side plates 330 are each provided with a first air inlet, and each first air inlet is disposed facing one battery module 200, so that the air flow flowing out of the first air duct 221 can smoothly enter the third air duct, the second air inlets are disposed on the end plate 340, and the second air inlets are also disposed in two, and each second air inlet is correspondingly communicated with one second air duct. For example, the second air inlet may be configured as a plurality of through holes 341 formed on the end plate 340, the plurality of through holes 341 are spaced on the end plate 340, and the through holes 341 are in communication with the second air duct and the third air duct. In some embodiments, the cross-section of the through hole 341 is hexagonal. Of course, the cross section of the through hole 341 may be circular, square, etc., which will not be described in detail herein.

Example two

The present embodiment provides an air-cooled battery system, which is different from the air-cooled battery system in the first embodiment in that: the specific structure of the cooling air duct 300 is different. Referring to fig. 8 and 9, the heat dissipation air duct 300 in this embodiment includes a main structure, the main structure includes a top plate 310, a bottom plate 320, two opposite side plates 330 and an end plate 340, wherein the end plate 340 is connected with the top plate 310, the bottom plate 320 and the two opposite side plates 330, and the end plate 340 is disposed at the tail end of the heat dissipation air duct 300, the two side plates 330 are each provided with a first air inlet, and each first air inlet is disposed facing one battery module 200, so that the air flow flowing out of the first air duct 221 can smoothly enter into the third air duct, the second air inlets are disposed on the end plate 340, and the second air inlets are also two, and each second air inlet is correspondingly communicated with one second air duct.

The second air inlet is a groove 342 formed in the end plate 340, the groove 342 is communicated with the second air duct and the third air duct, the number of the grooves 342 is two, and each groove 342 is corresponding to one battery module 200. Illustratively, the shaped groove 342 may be obtained by cutting the end plate 340, the shaped groove 342 being provided at an intermediate position of the end plate 340.

The rest of the structures in this embodiment are the same as those in the first embodiment, and will not be described here again.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. An air-cooled battery system, comprising:

a housing (100), wherein an air inlet hole (111) is formed in the housing (100);

the battery module (200) is arranged in the shell (100), each battery module (200) comprises a plurality of electric cores (210) which are arranged at intervals, a first air channel (221) is arranged between every two adjacent electric cores (210), the first air channel (221) is communicated with the air inlet (111), a second air channel is formed between one end of the battery module (200) along the arrangement direction of the electric cores (210) and the shell (100), and the second air channel is communicated with the air inlet (111);

the heat dissipation assembly is arranged between two adjacent battery modules (200), a third air channel is formed in the heat dissipation assembly, one end of the third air channel is communicated with the first air channel (221) and the second air channel, and the other end of the third air channel is communicated with the external environment.

2. The air-cooled battery system according to claim 1, wherein the housing (100) includes an upper cover (110) and a lower case assembly (120) that are fastened to each other, at least two mounting positions are provided on the lower case assembly (120), the battery modules (200) are in one-to-one correspondence with the mounting positions, and the battery modules (200) are disposed in the mounting positions.

3. The air-cooled battery system according to claim 1, wherein the heat dissipation assembly comprises a heat dissipation air duct (300), a third air duct is formed inside the heat dissipation air duct (300), and first air inlets are formed on two opposite sides of the heat dissipation air duct (300), and the first air inlets communicate the first air duct (221) with the third air duct;

the tail end of the heat dissipation air duct (300) is provided with a second air inlet, the second air inlet is used for communicating the second air duct with the third air duct, the head end of the heat dissipation air duct (300) is provided with an air outlet, and the air outlet is used for communicating the third air duct with the external environment.

4. The air-cooled battery system of claim 3, wherein the heat dissipation assembly further comprises a blower (400), the blower (400) being disposed at the air outlet, the blower (400) being configured to generate a passive air flow to expel the hot air to the external environment.

5. The air-cooled battery system according to claim 3, wherein the heat dissipation air duct (300) comprises a main structure and a guide portion (350), the first air inlet and the second air inlet are disposed on the main structure, the guide portion (350) is configured in a horn shape, a small opening end of the guide portion (350) is connected with the main structure, and a large opening end of the guide portion (350) forms the air outlet.

6. The air-cooled battery system of claim 5, wherein the main structure includes a top plate (310), a bottom plate (320), two opposing side plates (330), and an end plate (340) that are connected to each other, the first air intake is dug into the side plates (330), and the second air intake is provided into the end plate (340).

7. The air-cooled battery system according to claim 6, wherein the second air inlet is a plurality of through holes (341) formed in the end plate (340), and a plurality of through holes (341) are arranged at intervals on the end plate (340), and the through holes (341) are communicated with the second air duct and the third air duct.

8. The air-cooled battery system of claim 6, wherein the second air inlet is a groove (342) formed in the end plate (340), and the groove (342) communicates with the second air duct and the third air duct.

9. The air-cooled battery system according to claim 1, wherein a partition plate (220) is arranged between two adjacent electric cores (210), a plurality of first air channels (221) are formed in the partition plate (220), and the first air channels (221) are parallel to each other.

10. The air-cooled battery system of claim 1, wherein a U-shaped bracket (122) is disposed within the housing (100), and the heat sink assembly is secured to the U-shaped bracket (122).